2DZ7:
reference: DNA octaplex formation with an I-motif of water-mediated A-quartets: reinterpretation of the crystal structure of d(GCGAAAGC)., Sato Y, Mitomi K, Sunami T, Kondo J, Takenaka A, J Biochem (Tokyo). 2006 Dec;140(6):759-62. Epub 2006 Oct 24. PMID: 17062599

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).